#index5 {
  background: rgba(31, 31, 31, 0.5);
}
.bg_size {
  background-size: 100% 100%;
  background-repeat: no-repeat;
}
#index5 .main {
  width: 6.73rem;
  height: 7.33rem;
  margin: 0 auto;
  margin-top: 36%;
  position: relative;
}
#index5 .main .main_bg {
  width: 6.73rem;
  height: 7.33rem;
  background: url(../img/index5/问题背景.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}
#index5 .main .main_content {
  width: 3.73rem;
  height: 4.33rem;
  position: absolute;
  top: 1.2rem;
  left: 1.5rem;
  letter-spacing: 0.05rem;
}
#index5 .main .main_content .title {
  font-size: 0.32rem;
  font-weight: bold;
  margin-bottom: 0.3rem;
  text-align: center;
}
#index5 .main .main_content .little_title {
  font-size: 0.24rem;
  text-align: center;
}
#index5 .main .main_content .select {
  width: 2.7rem;
  list-style-type: none;
  font-size: 0.28rem;
  font-weight: bold;
  text-align: left;
  margin: 0 auto;
}
#index5 .main .main_content .select li {
  margin-bottom: 0.25rem;
  color: #000;
}
#index5 .main .main_content .select li input {
  background: #e4af77;
  border: 4px solid skyblue;
  margin-right: 0.1rem;
}
#index5 .tip {
  width: 2.5rem;
  height: 0.6rem;
  background: rgba(31, 31, 31, 0.6);
  border-radius: 0.6rem;
  position: absolute;
  font-size: 0.24rem;
  text-align: center;
  line-height: 0.6rem;
  top: 3.2rem;
  left: 2.3rem;
  color: #fff;
  letter-spacing: 0.05rem;
  transition: opacity 1s;
  opacity: 0;
  z-index: -1;
}
#index5 .btn {
  width: 3.13rem;
  height: 1.51rem;
  background: url(../img/index5/立即提交.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  position: absolute;
  bottom: 1rem;
  left: 1.9rem;
}
